Unit 1 : Measurements

 Unit 1 : Measurements

The unit Measurements has got 30 periods.

1. Introduction to physics (02 periods)

• Explaining simply the subject area of physics and how it relates to daily life and nature
• How physics contributed to the development of society
• Basic concepts in scientific methodology  

2. Physical quantities and units (04 periods)

• Fundamental physical quantities
• International system of units (SI units) - Système International d'Unités
• Base units
• Supplementary units
• Derived physical quantities and derived units
• Physical quantities without units
• Multiples and sub multiples of units

3. Dimensions (04 periods)

• Dimensions of basic physical quantities used in mechanics
• Mass
• Length
• Time
• Dimensions of derived physical quantities
• Uses of dimensions
• Testing the correctness of a  physical equation
• Finding the units of a given quantity
• Deriving expressions

4.Measuring Instruments (12 periods)

• Principle, least count and Range
• Errors of measurement
• Systematic Error
• Random Error
• Fractional error and percentage error
• Laboratory measuring instruments
• Meter ruler
• Vernier calipers
• Micrometer screw gauge
• Spherometer
• Travelling microscope
• Triple beam balance / Four beam balance / Scientific electronic balance
• Stop clock / Stopwatch / Digital stopwatch
• Digital multimeter
• Laboratory practical's using measuring instruments
• Vernier calipers
• Micrometer screw gauge
• Spherometer
• Travelling microscope

5.Scalars and vectors (08 periods)

• Scalar quantities
• Vector quantities
• Geometrical representation of a vector quantity
• Resultant vector of
• Two vectors in the same line and parallel lines
• Two inclined vectors
• Parallelogram law
• Triangle method
• System of vectors
• Polygon method

• Resolution of vectors